Baffle for water-tube boilers and method of constructing same.



F. 0. PAHMEYER. BAFPLE FOR WATER TUBE BOILERS AND METHOD OF UONSTRUGTINGSAME.

APPLICATION FILED FEB. 3,1912.

TEL $532,692.

2 SHEETSSHEET l.

F. 0. PAHMBYER. RAFFLE FOR WATER TUBE BOILERS AND METHOD OF GONSTRUGTINGSAME.

APPLICATION FILED FEB. 3, 1912.

2 SHEETS-S HEBT 2.

Patented July 16, 1912.

PA'rEN' .oFrro FREDERICK o. PAHMEYER, or se LOUIS, mr'ssoum, ASSIGNOR THEINE. SAFETY BOILER..COMPA.NY, or sun LOUIS, MISSOURI, A CORPORATION orivrrsso'um.

' BAFFLE rota WATER-TUBE BOILERS AND 'METHOD OF oonsrnuormo SAME.

To all'whom it may some, n:

Be. it knownthat I, FRriDERrcK O. PAH- aIEyER, a citizen of theUnitedSta-tes, residingat St. Louis, Missouri, have invented a certaimnewand vuseful Improvement in Bafiies for ater-Tube Boilers and Methodsof Gtmst'ructing Same, of which the following is'a full,clear, and exactdescription,

such as will'enable others skilled, in the art to which it appertains tomake and use the i This invention relates to water tube boilers, andparticularly. to water tubeboilers of the type in which ahorizontallydisposed battle is arranged approximately midway between thetop and bottoinbatlies of the boiler soas to cause the gases to travellongitudinally of'the tubes.

I Prior to my invention it was the general practice to form the middlebattle of a water tube'boiler of "battle tiles or members that wereintroduced through hollowstay tubes in the water legs of the boiler andthen slid longitudinally of the tubes into final posit'ionf It-is notpracticable to use large stay tubes'ortubes of relatively great diameter.--inthe water legs of the boiler owing to thec'onstruction of the waterlegs and to the factthat the large stay tubes take up too "much ofthewater-circulating space in' the water leg, and therefore the bafiietiles which [haven-heretofore been used were compara- 'tively small andof such design that they could be introduced through the hollow staytubes. Consequently, a great deal of time was consumed in forming themiddle battle of the boiler on account of the large number ofcomparatively small tiles that'had to be used. Furthermore, twohorizontal rows of tubes were. required to carry each middle baflle'because the battle tiles had to, be arranged in a zig-zag manner betweenthe upgases on the under could not be adjusted quickly and easily onaccount of the great number of tiles and the way they were supported onthe tubes, nor

could the soot be removed easily from the faces ot said bafl'le owing tothe, irregularity Specification of Letters Patent. Patented July 16.,1912;

of said faces, the fact that the baflie'could 1 not be adjusted easilybeing quite an objectionable feature because the'most efficient positionor location of the middle battle can only be determined by experimentafterthe boiler has been in operation for some time,

One object of my invention is to provide.

a water tube boiler in which the middle baf- He can be installed quicklyand easily, thus reducing the cost of erecting the boiler.

-Another object is to provide a water tube boiler in which themiddle'baffle can be altered easily while the boiler is in operation,

the bafile being formed from members that have a relatively smallcontact on the tubes,

boiler whose middle baiiie carried entirely by one of the horizontalrows of tubes, and

which is so designed that the major portion of the surfaces of thetubeswhich carry the battle are exposed to the gases on the under sideof the bathe.

Another object is to provide a bathe member of novel construction thatcan be installed or removed easily, that can be altered in position andextent so as to conform to the 'best operating conditions, and which canbe used to form either the top, middle or bottom battle of a water tubeboiler. And still-another objectis to provide a novel method ofconstructing the middle battle of awater'tube boiler.

1 Figure 1 a vertical longitudinal sectional view of a boilerconstructed in accordance with my invention; Fig. 2 is a transversesectional view taken on approxitional taken through-the tubesillustrating the second step in the method of arand whose topsurfaces-are of such design .that when assembled they will form a matelythe line 2-'2 of Fig. 1; Fig. 3 is an- 'enlarged transverse sectionalview taken.

ranging the bafile members in operative poin the method of arranging thebathe mem- A designates the tubesopposite ends are supported by waterlegs.

sition; and Fig.5 is a 'perspec tiveview of B, and C designates thelower baflle which extends over' the combustion chamber. A

horizontally disposed baflie D, which I will' hereinafterrefer to as themiddle battle, is arranged v approximately midway between thelowerbaftle C and the upper baffleE so as. to cause the gases to travellongitudi nally of the tubes, as indicatcdby the arrows infFigs 1. Saidmiddle baffie D is formed" rom'a number oflbatlle membersl which arearranged in a horizontal position upon one horizontal row, of tubes, as

shown in Fig. 3'. The battle members 1 that I prefer to use-are formedfrom cast metal,

and consist of a substantially flat plate provided on its under sidewith a plurality of transversely extending r1bs 2 whose ends are curvedslightly at 3, as indicated 111 Fig. 5,

so that they will conform to the shape of the tubes A on whiclrtheyrest. If desired, a longitudinally extending rib i may be formed onltheunderside of the member 1 so as to strengthen sald member and 1nterruptthe transverse ribs"? so that-said transverse ribs cannot hook onto thetubes whenever the bafiie members are being removed, as hereinafterdescribed, the opposite ends of said strengthening rib at beingpreferably inclined or tapered. Openings 5 are formed in the transverseribs 2 on one side of the longitudinal rib 4., and noncircular-shapedopenings 6 are formed in said ribs 2 on the opposite. side of saidlongitudinal-rib'so as. to facilitate the arrangement of the battlemembers 1 in operative position.

The balile members 1 are not introduced through hollow stay tubes in thewater legs of the boiler, as has heretofore been the general practice,but said baflie members are slid downwardly between the tubes intoapproximate position, as shown in Fig. 3, and are thereafter turned intoa horizontal positionand placed upon the tubes by means 6f a bar orother suitable .tool which the operator inserts through ahollow staytube F in the water leg-B of the boiler, both water legs being providedwith several hollow stay tubes, as shown in Fig. l, which are arranged.a slight distance abovekthe horizontal row of tubes that carry themiddle baflie, and the hollow stay tubes in the rear water leg 13 beingarranged in staggered relation to'the hollow'st ay tubes in the frontwater leg. The space or flue G above the tubes A of the boiler is largeenough to enable a workman to enter same. Consequently, the baillemembers 1 can be as do.

inserts" a string or other suitable flexible device as through theopenings 5 in the transverse ribs 2 on the under side of a 'bafilemember and then allows said balfie' member to slide downwardly betweenthe tubes until i't'is approximately opposite one of the hollow stay ofthe boiler at the end .of the'boiler at which the workman is*located, asshown in -brokenlines in Fig. 3, Another workman, then introduces abarg/ or other suitable tool providedwith a ,nomircular-shaped endthrough the hollow stay tube and in serts' theend of'said tool in thenon-c-ircw larshaped opening 6 in one of the trans- ,member, asillustrated in Fig.4. There'- after, said workman rot-ates thetool y soas to turnthe. baflie member into a llOIlZOIltfLl vice and tool arewithdrawn and another baflle member is slid downwardly and. there afterturned into a horizontal position and placed upon the tubes, theseoperations being repeated until the required numberof battle membershave been arranged in position to form'a middle baflie of the desireddimensions. If desired, the flexible member'may be tied to said memberand left attached thereto because as soon as the boiler is fired saidflexible device will be burned up'. The baflle members are pref erablyintroduced at" a point adjacent one of the water legs of the boiler "andare then slid longitudinally on the tubes into final position.

Thebattle D of the constructionabove described can be installed quicklyand easily on account of the comparatively few mem-' bers that arerequired to form the battle; and another desirable feature of such abafi e is that it increases the efiiciency of the boiler owing to thefact that only one horizontal frow of tubes are required to 'carry thebaltle, and the bafiie members are so designed that all except a smallportion of each-tube; is-exposed to the gases on the under side of thebaffle; A -middle bafilef cost, but it can alsobe removed easily'be-lcause the members from whichlt-' s'formed troduce the tool y through thehollow stay tubes, grasp the handle members and lift them from the tubesand then turn them so that they will slide downwardly into the spacebeneaththecboiler. The top baflie E. bf'the furnace may alsobe formedfrom bafiie members 1 of the construction abovetubes F in the water legwardlythrough the tubes, as indlcated 1n Fig. 3. In arranging the battlemembers 1 in position the Workman first verse ribs 2 on the under sideof .the baffie I I position, thus, causing it to rest squarely 1 upontwo of the tubes A. The flexible dedevice in thatis used to position thebaflle D of the-construction abovedescribed can "not only be installedquickly and at a low 1-20 are so designed that the workman can intubesof the boiler, and means on said bafile' described, and if said bafflemembers were made of refraetorymaterial it would alsobe practicable touse them toform the bot tom bafile C ofv the boiler. Therefore, while myimproved bafiie member is of greatest value in formin the middlebaflle'ef a water tube boiler 1t can also be used to form] the top orbottom baflle. of such a boiler.

Having thus described my invention, what I claim. as new anddesire tosecure by Letters Patent is:

1. A Water plurality of horizontal'rows of tubes, baffle membersarranged in a horizontal position at one end of said horlzontal rows oftubes so as to form a baflle, and means on said baflle members forcooperating with. devicesthatare used during the operation of arrangingthe baflle members in operative position. i

2. A water tube boiler provided with horizontal rows of tubes, a bafllecarried by one of said horizontal rows of tubes and consisting of aplurality of members, each of which spans the space between two of thetubes of said row, means on said baflle member for cooperatingwith adevice that is used to lower the baille members between the ends,transversely extending ribs on the under sides of said bafile memberswhich" lie between the tubes of the row of tubes on which said membersare mounted, and open tube boiler provided with a ings in saidtransverseribs on opposite Sides of said longitudinal ribs substantiallyas and for the purpose described.

4. A method of constructing the middle horizontal b afile of a Watertube boiler which consists in sliding battle members downwardlythrough'therows'of tubes'into' approximate position, andthereafterturning the battle members into substantially a horiz o'ntalposition andtubes which carry-them.

which the tubes are arranged in stag ered relation, which consists inslidin aflle members downwardly between the tu s into approximateposition, and thereafter introplacing them upon the 5., A method of;constructing" the) middle horizontal battle of a water-'tubeboilerinducing -'a tool through an opening in one of the water legs ofthe-boiler so as to. engage said ba-file members, and turn them from asubstantially vertical into a horizontal position and place them uponthe horizontal row of tubes that carries the middle baflieh 6. A methodof constructing the middle horizontal battle of a water tube boilerwhich consists in suspending. baffle members from flexible devices andlowering them down between the tubes of a boiler into approxi mateposition, introducing a tool through an opemng in the water leg of theboiler so as to engage the bafiie members, and finalili-y turningsaidtool so as to arrange the ba e members in an approximatelyhorizontal position and placethem upon the row of tubes that carriesthe'balile. p I

In testimony whereof I hereunto afiix my signature in :the presence oftwo witnesses, this thirtieth day of January 1912.

FREDERICKOLPAHMEYEB.

Witnesses GEORGE R. LAosoN, GEORGE BAKEWELL.

